Rapport nr STRAUMMÅLING NS LOKALITET MIDTFLUA. Tysnes kommune

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1 Rapport nr STRAUMMÅLING NS LOKALITET MIDTFLUA Tysnes kommune

2 Resipientanalyse AS Foretaksnr.: Adresse: Kontaktperson: Telefon: Epost: Internett: Lokalitetsnamn, lokalitetsnr.og biomasse tillatelse Midtflua TN Kommune Ramsvik kommune NO MVA Dortledhaugen Rådal Frode Berge-Haveland resipientanalyse@online.no Dato, rapport 24 / Oppdragsgjevar Lerøy Vest AS Dato, felt Utsett: 14 / Opptak: 24 / Rapport nr Oppdragsart Straummåling Rapportsider 48 Personell feltundersøking Frode Berge-Haveland, Resipientanalyse AS Robert Siglevik, Lerøy Vest AS Erik Johnsen, Lerøy Vest AS Tommy Tøssdal, Lerøy Vest AS Høgste målte vasstraum: Ved 5 meters djup: 0,366 m/s MOT sørvest (225 ). Ved 15 meters djup: 0,246 m/s MOT aust (90 ). Den gjennomsnittlege Vassutskiftningsstraumen i måleperioden: Den gjennomsnittlege Spreiingsstraumen i måleperioden: 6 til 8 cm/s 5 til 7 cm/s mellom 5 og 15 meters djup. mellom 20 og 30 meters djup. Samandrag Ein Nortek 400kHz Aquadopp profilerande straummålar blei sett ut på ca. 36 meters djup. Der var ca. 160 meter djupt ved målepunktet. Straummålaren målte oppover i vassøyla og var programmert til å måle 40 celler a 2 meter. Straummålinga viser ein dominerande straumretning nordover ved 5, 25 og 30 meters djup. Mellom 10 og 20 metersdjup gikk straumen omtrent like mykje nordover som sørover. Fagansvarleg i Resipientanalyse AS Digitalt signert av Frode Berge- Kvalitetsansvarleg i Resipientanalyse AS Frode Berge-Haveland Cand. Scient. Marin mikrobiolog Daglegleiar i Resipientanalyse Kjetil Aursland Cand. Scient. Mikrobiolog Kvalitetsleiar i Resipientanalyse Frode BergeHaveland Haveland DN: cn=frode Berge-Haveland, o=resipientanalyse, ou, =resipientanalyse@online.no, c=no Dato: :12:05 +02'00' Side ii

3 INNHALD 1.0 Skisse for utsett av straummålar Kart 2 Figur 2.1 Sjøkart (1: ) over resipientområdet 2 Figur 2.2 Botnkart (1: ) over lokalitetsområdet 3 Figur 2.3 Botnkart (1: 5 000) med av merka målepunkt Vassutskiftningsstraum Spreiingsstraum 27 Side iii

4 Skisse for utsetting av 1 profilerande doppler straummålar Overflatebøye A1 oppdrift 18 kg Markerer måleområdet Straummålar ca. 40 meters djup Trålkule a 9 kg oppdrift 6 mm Nylontau 12 mm Nylontau 5 kg kjetting 12 mm Nylontau Kjettinglodd ca 35 kg Kjettinglodd ca 35 kg

5 Midtflua Gggggggggggggggg Gggggggggg

6 Midtflua Gggggggggggggggg Gggggggggg

7 B S 5 6 Gggggggggggggggg Posisjon til straummålar Gggggggggg N / E

8 StraumålingMidtflua Vassutskifting Resipientanalyse AS Frode Berge-Haveland

9 Content Summary... 2 Details... 3 Instrument... 3 Configuration... 3 Quality... 3 Post processing... 3 Statistics... 4 Top [5,0m]... 4 Middle [10,0m]... 4 Bottom [15,0m]... 4 Direction with return period... 5 Top [5,0m]... 5 Middle [10,0m]... 5 Bottom [15,0m]... 5 Time series... 6 Top [5,0m]... 6 Middle [10,0m]... 6 Bottom [15,0m]... 7 Mean speed - roseplot... 8 Top [5,0m]... 8 Middle [10,0m]... 8 Bottom [15,0m]... 9 Max speed - roseplot Top [5,0m] Middle [10,0m] Bottom [15,0m] Speed histogram Top [5,0m] Middle [10,0m] Bottom [15,0m] Direction histogram Top [5,0m] Middle [10,0m] Bottom [15,0m] Direction/Speed histogram Top [5,0m] Middle [10,0m] Bottom [15,0m] Flow Top [5,0m] Middle [10,0m] Bottom [15,0m] Sensors Pressure Tilt Temperature... 21

10 Summary

11 Details Instrument Head Id AQP 3645 Board Id AQD 5627 Frequency Configuration Start :00 End :30 Data records 5872 Longitude 5 28,28'E Latitude 60 4,64'N Orientation DOWN Cells 40 Cell size(m) 2 Blanking distance(m) 0,99 Average interval(sec) 60 Measurement interval(sec) 600 Quality Low Pressure Treshold 0 HighTilt Threshold 30 Expected Orientation UP Amplitude Spike Treshold 70 Velocity Spike Treshold 5 SNR Treshold 3 Post processing Selected Start :00 Selected End :50 Compass Offset 0 Pressure Offset 0 Selected Records 5868 Reference Water Surface Top Depth(m) 5 Top invalid data 0 Middle Depth(m) 10 Middle invalid data 0 Bottom Depth(m) 15 Bottom invalid data 1

12 Statistics Top [5,0m] Mean current [m/s] 0.08 Max current [m/s] 0.37 Min current [m/s] 0.00 Measurements [#] 5868 Std.dev [m/s] 0.04 Significant max velocity [m/s] 0.12 Significant min velocity [m/s] year return current [m/s] year return current [m/s] Most significant directions [ ] 15.00, 30.00, 45.00, Most significant speeds [m/s] 0.10, 0.05, 0.15, 0.20 Most flow m³ by Least flow m³ by Middle [10,0m] Mean current [m/s] 0.06 Max current [m/s] 0.26 Min current [m/s] 0.00 Measurements [#] 5868 Std.dev [m/s] 0.04 Significant max velocity [m/s] 0.10 Significant min velocity [m/s] year return current [m/s] year return current [m/s] Most significant directions [ ] 60.00, 45.00, 30.00, Most significant speeds [m/s] 0.05, 0.10, 0.15, 0.20 Most flow m³ by Least flow m³ by Bottom [15,0m] Mean current [m/s] 0.06 Max current [m/s] 0.25 Min current [m/s] 0.00 Measurements [#] 5867 Std.dev [m/s] 0.04 Significant max velocity [m/s] 0.10 Significant min velocity [m/s] year return current [m/s] year return current [m/s] Most significant directions [ ] 60.00, 75.00, 45.00, Most significant speeds [m/s] 0.05, 0.10, 0.15, 0.20 Most flow m³ by Least flow m³ by

13 Direction with return period Top [5,0m] Direction Mean Max Mean 10y Max 10y Mean 50y Max 50y 0 0,076 0,235 0,125 0,387 0,140 0, ,079 0,245 0,130 0,404 0,146 0, ,074 0,286 0,121 0,472 0,136 0, ,070 0,311 0,115 0,513 0,129 0, ,094 0,302 0,155 0,498 0,174 0, ,067 0,366 0,110 0,604 0,124 0, ,066 0,188 0,108 0,310 0,122 0, ,067 0,183 0,110 0,302 0,123 0,339 Middle [10,0m] Direction Mean Max Mean 10y Max 10y Mean 50y Max 50y 0 0,056 0,177 0,092 0,291 0,103 0, ,064 0,207 0,105 0,342 0,118 0, ,060 0,220 0,099 0,362 0,111 0, ,056 0,231 0,093 0,381 0,104 0, ,078 0,245 0,128 0,405 0,144 0, ,063 0,260 0,104 0,429 0,117 0, ,048 0,141 0,079 0,232 0,088 0, ,049 0,160 0,081 0,264 0,091 0,296 Bottom [15,0m] Direction Mean Max Mean 10y Max 10y Mean 50y Max 50y 0 0,056 0,179 0,093 0,295 0,104 0, ,058 0,189 0,095 0,312 0,106 0, ,061 0,246 0,101 0,406 0,113 0, ,055 0,201 0,091 0,332 0,103 0, ,083 0,241 0,136 0,397 0,153 0, ,062 0,217 0,103 0,357 0,115 0, ,047 0,125 0,077 0,207 0,087 0, ,050 0,153 0,082 0,253 0,092 0,284

14 Time series Top [5,0m] Middle [10,0m]

15 Bottom [15,0m]

16 Mean speed roseplot Top [5,0m] Middle [10,0m]

17 Bottom [15,0m]

18 Max speed roseplot Top [5,0m] Middle [10,0m]

19 Bottom [15,0m]

20 Speed histogram Top [5,0m] Middle [10,0m]

21 Bottom [15,0m]

22 Direction histogram Top [5,0m] Middle [10,0m]

23 Bottom [15,0m]

24 Direction/Speed histogram Top [5,0m] Middle [10,0m]

25 Bottom [15,0m]

26 Flow Top [5,0m] Middle [10,0m]

27 Bottom [15,0m]

28 Sensors Pressure Tilt

29 Temperature

30 Straummåling Midtflua Spreiingsstraum Resipientanalyse AS Frode Berge-Haveland

31 Content Summary... 2 Details... 3 Instrument... 3 Configuration... 3 Quality... 3 Post processing... 3 Statistics... 4 Top [20,0m]... 4 Middle [25,0m]... 4 Bottom [30,0m]... 4 Direction with return period... 5 Top [20,0m]... 5 Middle [25,0m]... 5 Bottom [30,0m]... 5 Time series... 6 Top [20,0m]... 6 Middle [25,0m]... 6 Bottom [30,0m]... 7 Mean speed - roseplot... 8 Top [20,0m]... 8 Middle [25,0m]... 8 Bottom [30,0m]... 9 Max speed - roseplot Top [20,0m] Middle [25,0m] Bottom [30,0m] Speed histogram Top [20,0m] Middle [25,0m] Bottom [30,0m] Direction histogram Top [20,0m] Middle [25,0m] Bottom [30,0m] Direction/Speed histogram Top [20,0m] Middle [25,0m] Bottom [30,0m] Flow Top [20,0m] Middle [25,0m] Bottom [30,0m] Sensors Pressure Tilt Temperature... 21

32 Summary

33 Details Instrument Head Id AQP 3645 Board Id AQD 5627 Frequency Configuration Start :00 End :30 Data records 5872 Longitude 5 28,28'E Latitude 60 4,64'N Orientation DOWN Cells 40 Cell size(m) 2 Blanking distance(m) 0,99 Average interval(sec) 60 Measurement interval(sec) 600 Quality Low Pressure Treshold 0 HighTilt Threshold 30 Expected Orientation UP Amplitude Spike Treshold 70 Velocity Spike Treshold 5 SNR Treshold 3 Post processing Selected Start :00 Selected End :50 Compass Offset 0 Pressure Offset 0 Selected Records 5868 Reference Water Surface Top Depth(m) 20 Top invalid data 1 Middle Depth(m) 25 Middle invalid data 1 Bottom Depth(m) 30 Bottom invalid data 1

34 Statistics Top [20,0m] Mean current [m/s] 0.06 Max current [m/s] 0.30 Min current [m/s] 0.00 Measurements [#] 5867 Std.dev [m/s] 0.03 Significant max velocity [m/s] 0.09 Significant min velocity [m/s] year return current [m/s] year return current [m/s] Most significant directions [ ] 60.00, 30.00, 45.00, Most significant speeds [m/s] 0.05, 0.10, 0.15, 0.20 Most flow m³ by Least flow m³ by Middle [25,0m] Mean current [m/s] 0.07 Max current [m/s] 0.25 Min current [m/s] 0.00 Measurements [#] 5867 Std.dev [m/s] 0.04 Significant max velocity [m/s] 0.12 Significant min velocity [m/s] year return current [m/s] year return current [m/s] Most significant directions [ ] 30.00, 45.00, 15.00, Most significant speeds [m/s] 0.10, 0.05, 0.15, 0.20 Most flow m³ by Least flow m³ by Bottom [30,0m] Mean current [m/s] 0.05 Max current [m/s] 0.17 Min current [m/s] 0.00 Measurements [#] 5867 Std.dev [m/s] 0.03 Significant max velocity [m/s] 0.08 Significant min velocity [m/s] year return current [m/s] year return current [m/s] Most significant directions [ ] 30.00, 45.00, 15.00, Most significant speeds [m/s] 0.05, 0.10, 0.15, 0.20 Most flow m³ by Least flow m³ by

35 Direction with return period Top [20,0m] Direction Mean Max Mean 10y Max 10y Mean 50y Max 50y 0 0,054 0,168 0,090 0,278 0,100 0, ,058 0,162 0,096 0,267 0,108 0, ,055 0,167 0,090 0,276 0,101 0, ,050 0,298 0,082 0,492 0,092 0, ,075 0,269 0,124 0,444 0,139 0, ,058 0,203 0,096 0,334 0,108 0, ,044 0,168 0,073 0,277 0,082 0, ,042 0,130 0,068 0,214 0,077 0,240 Middle [25,0m] Direction Mean Max Mean 10y Max 10y Mean 50y Max 50y 0 0,078 0,246 0,128 0,406 0,143 0, ,086 0,236 0,141 0,389 0,158 0, ,065 0,195 0,108 0,322 0,121 0, ,063 0,183 0,103 0,301 0,116 0, ,076 0,237 0,126 0,391 0,141 0, ,078 0,200 0,128 0,330 0,144 0, ,054 0,160 0,090 0,263 0,100 0, ,057 0,141 0,094 0,232 0,105 0,260 Bottom [30,0m] Direction Mean Max Mean 10y Max 10y Mean 50y Max 50y 0 0,051 0,156 0,084 0,258 0,095 0, ,057 0,167 0,094 0,276 0,105 0, ,046 0,148 0,076 0,244 0,086 0, ,041 0,146 0,068 0,241 0,077 0, ,051 0,157 0,084 0,259 0,095 0, ,050 0,171 0,083 0,282 0,093 0, ,035 0,155 0,057 0,256 0,064 0, ,040 0,124 0,066 0,204 0,074 0,229

36 Time series Top [20,0m] Middle [25,0m]

37 Bottom [30,0m]

38 Mean speed roseplot Top [20,0m] Middle [25,0m]

39 Bottom [30,0m]

40 Max speed roseplot Top [20,0m] Middle [25,0m]

41 Bottom [30,0m]

42 Speed histogram Top [20,0m] Middle [25,0m]

43 Bottom [30,0m]

44 Direction histogram Top [20,0m] Middle [25,0m]

45 Bottom [30,0m]

46 Direction/Speed histogram Top [20,0m] Middle [25,0m]

47 Bottom [30,0m]

48 Flow Top [20,0m] Middle [25,0m]

49 Bottom [30,0m]

50 Sensors Pressure Tilt

51 Temperature